2856198920 has 16 divisors (see below), whose sum is σ = 6426447660. Its totient is φ = 1142479552.

The previous prime is 2856198901. The next prime is 2856198931. The reversal of 2856198920 is 298916582.

It can be written as a sum of positive squares in 2 ways, for example, as 2712534724 + 143664196 = 52082^2 + 11986^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35702447 + ... + 35702526.

Almost surely, 2^2856198920 is an apocalyptic number.

2856198920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2856198920 is an abundant number, since it is smaller than the sum of its proper divisors (3570248740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2856198920 is a wasteful number, since it uses less digits than its factorization.

2856198920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71404984 (or 71404980 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 2856198920 is about 53443.4179296197. The cubic root of 2856198920 is about 1418.8271277909.

The spelling of 2856198920 in words is "two billion, eight hundred fifty-six million, one hundred ninety-eight thousand, nine hundred twenty".